Monthly Notices of the Royal Astronomical Society, Volume 68; Volumes 1907-1908Priestley and Weale, 1908 Includes lists of additions to the Society's library, usually separately paged. |
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Page 415
... spectral class , ( 4 ) proper motion , ( 5 ) parallax , ( 6 ) position . In any attempt to look upon the stellar uni- verse as an orderly whole , the relationships between these characters must be of fundamental importance . To ...
... spectral class , ( 4 ) proper motion , ( 5 ) parallax , ( 6 ) position . In any attempt to look upon the stellar uni- verse as an orderly whole , the relationships between these characters must be of fundamental importance . To ...
Page 417
... spectral class - be purely classificatory . Let the frequency of any class a of A in the population N be n and of the class b of B ben ; let the frequency of individuals combining both classes be nab , then φ ¿ 3 = $ { ( › S nano I nab ...
... spectral class - be purely classificatory . Let the frequency of any class a of A in the population N be n and of the class b of B ben ; let the frequency of individuals combining both classes be nab , then φ ¿ 3 = $ { ( › S nano I nab ...
Page 421
... Spectral Class . As far as we are aware , no classifications of stellar colour according to parallax or proper motion have yet been made . Mr. Franks has recently published three tables giving the classification of colour according to ...
... Spectral Class . As far as we are aware , no classifications of stellar colour according to parallax or proper motion have yet been made . Mr. Franks has recently published three tables giving the classification of colour according to ...
Page 422
... Spectral Class . -25 ° to S. Pole -25 ° to N. Pole • C1 = '71 • C1 = '74 · C1 = '71 432 Southern Stars from 928 ... spectral class is far more clearly associated with magnitude than colour is . Accordingly , we may sum up our first ...
... Spectral Class . -25 ° to S. Pole -25 ° to N. Pole • C1 = '71 • C1 = '74 · C1 = '71 432 Southern Stars from 928 ... spectral class is far more clearly associated with magnitude than colour is . Accordingly , we may sum up our first ...
Page 423
... spectral classes have so small a frequency that , for statistical purposes , it was absolutely needful to group certain classes together . The classes actually used in the notation of the Draper Catalogue were- Class A Class E Classes F and ...
... spectral classes have so small a frequency that , for statistical purposes , it was absolutely needful to group certain classes together . The classes actually used in the notation of the Draper Catalogue were- Class A Class E Classes F and ...
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Common terms and phrases
angle appear Astrographic axis bright brighter Cape Catalogue centre coefficient colour column comet comparison stars computed corrections correlation curve cyanogen David Gill deduced determination distance Double Stars drift E. E. Barnard Earth eclipse epoch equation equatorial faint formula give given Greenwich groups heliometer instrument Julian Day Jupiter latitude lens Lick Observatory limb lines longitude magnitude Max Wolf mean measures meridian method Monthly Notices Moon nebula nucleus number of stars observations obtained orbit outer condensation paper parallax Paris perihelion perihelion passage period perturbations photographs planet plates position present Professor proper motion reduced reflector refraction refractor region right ascension ring Royal Observatory satellite Saturn seen Sept solar spectra spectral class spectroheliograph spectroscope spectrum spot stellar sun-spot Sun's surface Table telescope tion variable Yerkes Observatory zone ΙΟ